.main{
    position: relative;
    background-color: rgb(252,252,212);
}

.content {
  height: 550px;
  background-color: rgb(252, 252, 212);
  position: relative;
}

/* 校园资讯 */
.slide {
  position: relative;
  height: 220px;
  width: 80%;
  background-color: white;
  left: 100px;
  top: -10px;
}